| /* |
| * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef MODULES_AUDIO_DEVICE_ANDROID_OPENSLES_COMMON_H_ |
| #define MODULES_AUDIO_DEVICE_ANDROID_OPENSLES_COMMON_H_ |
| |
| #include <SLES/OpenSLES.h> |
| #include <stddef.h> |
| |
| #include "rtc_base/checks.h" |
| |
| namespace webrtc { |
| |
| // Returns a string representation given an integer SL_RESULT_XXX code. |
| // The mapping can be found in <SLES/OpenSLES.h>. |
| const char* GetSLErrorString(size_t code); |
| |
| // Configures an SL_DATAFORMAT_PCM structure based on native audio parameters. |
| SLDataFormat_PCM CreatePCMConfiguration(size_t channels, |
| int sample_rate, |
| size_t bits_per_sample); |
| |
| // Helper class for using SLObjectItf interfaces. |
| template <typename SLType, typename SLDerefType> |
| class ScopedSLObject { |
| public: |
| ScopedSLObject() : obj_(nullptr) {} |
| |
| ~ScopedSLObject() { Reset(); } |
| |
| SLType* Receive() { |
| RTC_DCHECK(!obj_); |
| return &obj_; |
| } |
| |
| SLDerefType operator->() { return *obj_; } |
| |
| SLType Get() const { return obj_; } |
| |
| void Reset() { |
| if (obj_) { |
| (*obj_)->Destroy(obj_); |
| obj_ = nullptr; |
| } |
| } |
| |
| private: |
| SLType obj_; |
| }; |
| |
| typedef ScopedSLObject<SLObjectItf, const SLObjectItf_*> ScopedSLObjectItf; |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_AUDIO_DEVICE_ANDROID_OPENSLES_COMMON_H_ |